Combined type-writing and computing machine.



A. W. SMITH.

COMBINED TYPE WRITING AND COMPUTING MACHINE. APPLICATION FILED 00129, 1909. 1 1,03 ,921, Patented Aug.27,1912.

10 SHEETS-4311111 1.

FIG. I.

WIT NESEES.

HISATTEIRNEV A. W. SMITH. COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLIOATION FILED OGT. 29,"1909.- 1,036,921. Patented Aug. 27,1912.

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5 INVENTUR.

WITNESEEE.

HISATTURNEY A. W. SMITH. COMBINED TYPE WRITING AND COMPUTING MACHINE.

a a E Nb 2 APPLICATION FILBD- OUT. 29, 1909.

WITNESSES,

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. APPLICATION FILED OCT. 29, 1909- 1,036,921, Patented Aug. 27, 1912.

10 SHEETS-SHEET 4.

WITNEESES;

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' I HEAT TBRNEY Patented'Aug. 27, 1912.

lb SHEETS-SHEET 5.

A., W. SMITH. COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED 001. 29, 1909.

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HISATTEIRNEY Q WITNESEIESL A. SMITH.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED OUT. 29, 1909.

1,036,921 Patented Aug. 27, 1912.

' 10 SHEETSBHEET 6.

HI'SATTEIRNEY A; w. SMITH. COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLIOATION FILED OCT. 291 909.

Patented Aug. 27, 1912.

10 sums-sum: *1.

H15 ATTUR-NEY' M3 v 7 J 4 NNN 03 N8 3d 0. mm .7 om #N 0 E 03 A. W. SMITH.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED OUT. 29/1909.

Patented Aug. 27, 19.12.

10 SHEETS-SHEET 8.

c0 0 in I INVENTEI 'HIEATTURNEY A. W. SMITH.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED-OCT. 29, 1909. 1,036,921 Patented Aug. 27, 1912.

10 SHEETS-SHEET 9.

WITNESSES,

HIS ATTEIRNEV A. W. SMITH. comnmnn TYPE WRITING AND oomrucrmemonmn.

' APPLICATION FILED OCT, 29, 1909.

' Patented Aug. 27, 1912.

10 SHEETS-SHEET 10.:

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v 'IN V ENTUR HIEIATTEIRNEY wlwtssza UNITED STATESPATENT OFFICE.

ARTHUR). sivrrrn, or NEW YORK, N. Y., -AssIGNon r Yos'r WiR-ITING MAcHINE .COMPANY, or ILION, NEwYoRK, A coaronarron or vnw YORK.

COMBINED TYP -WRITING nlvn oomrurmo MACHINE.

Specification of Letters Patent. Patented Aug. 27,1912.

To all whom it'mag concern: 7

Be it known that I, ARTHUR W. SMITH, citizen'of the United States, and resident Y of'the borough of Manhattan, city of New i and computing machines."

York; in the county of New York and State of New York, have invented certain new and useful Improvements in' Combined .Typ'e-Vlriting and Computing Machines, of

{ingand computing machine wherein any ---des1red matter may be writt'en'byv the typewriting mechanism and wherein certain numbers WI'lt-tOIl either alone orin (3011111116- tion with other typewritten matter may be automatically registered.

To these ends I have devised novel register' mechanism; novel means for'controlling the operation of the register of a computing machine; novel connections between the 'comp'uting mechanism and the numeralk'eys of the typewriter; novel denomination selecting mechanismj novel means whereby said denomination selecting mechanism is controlled by the carriage of the typewriter;

novel means for controlling the computing.

mechahism to perform theoperations ofaddition; subtraction, multiplication and division hovel means for resetting the register to Zero; certain safeguarding devices for preventing incorrect operation of, the machine; novel means for affording punctuation of the numbers written and for varying the style of punctuation; novel indicating means for indicating the position of the denomination selecting device, and numerous features of construction and a rrangement and combinations, all of which will b'e ifu'lly setfo rth herein and larly pointed outin the claims. I

One embodimentof my invention is illus "trated .in the accompanying drawings wherein. like reference characters indicate like parts 111 the several views. 'eExcept where otherwise indicated said drawings are of natural size. I

In said draw ngs, Figure 1 1s a front to rear. vertical sectional View showing the typewriter and the adding machine and the connections between themfthe' typewriter.

part icubeing shown in central vertical section andthe adding machinebeing shown in section just insidethe right-hand frame plate. Fig. 2 is a top'plan view of the adding machine with the typewriter removed. Fig. 3' is a fragmentary top view of the register casing showing a'certain indicator or scale in a different position from that illustrated in ,Fig. 2. Figs. 1, 2and. 3, are on a reduced scale. Fig. 4 is a front to rear vertical se'ctiona-l view of the .main part of the adding machine and showing the denomination selectmg carriage in operative posltion and the scct1on;.be1ng taken about centrally through said carriage. Fig. 5 is a view similar to Fig. 4 but with some of the parts omitted and'other parts shown in operated positions. Fig. 6 is a detail perspective .view showing the innermost one and the outermost oneof thenine nested setting-up levers. Fig. 7 is a right-hand side elevation of one of the register wheels. Figs. 8 to 12 inclusive are. isometric views showing the several parts which go to-make up oneof the registerwheel units. Fig. 8 shows the register wheel proper. Fig. 9 is a disk on which the register wheel or annulus is mounted and with which it is fri'ctionally connected. Fig. 10 shows -the flanged colla r on which said disk is mounted. Fig.11

representsanother disk whichis frictionally mounted on the collar shown in Fig. 10 and is frictionally connected with the register wheel. Fig. 12 shows the arresting device which is mounted on the c lar shownin Fig- 10 and which arrests the register wheel.

Fig. 13 is an isometric view of one of the friction springs by means of which the various parts shown in Figs. '8, to 12 inclusive are connected. Fig. 14 is a transverse cen-.

tral section through the register and looking toward the front of the machine. Fig. 15 is a rear elevation of the principal parts of the adding machine, the adding machine be-v I ingv shown in transverse verticalsection just 7 back of the denomination selecting carriage.

Fig. 16. is a View similar to Fig. 15 and showing certain partsv shown in said Fig.- 15, "but the parts being shown in a different p0 'sition. "Fig. 17 is a fragmentary top plan view .of .the' upper.- rear .part' of the typewriter and." the connect-ions whereby the typewriter carriage controls'the stepaby-step motion of the denomination selecting device in Fig. 17. Fig. 24 is a fragmentary lefthand side elevation showing rtions of the operating mechanism and -t. e connections between said mechanism and certain other parts of the adding machine. Fig. 25 is a left-hand side elevation of part of the adding machine, the casing for the being removed. Fig. 26 is an isometric yiew, slightly enlarged, ofthe'detachable clip or connecting device whereby the numeral keys of the typewriter control the adding machine. Fig. 27 is a front elevation of the register. Fig. 28 is a left-hand side elevation, partly broken away and partly in section, showing the register, one of the settingup units and part of the operating mechanism. Fig. 29 is aview similar to Fig. 28 but omitting some parts shown in said Fig. 28 and including parts of the zero setting mechanism not shown in said Fig. 28. In

this figure the parts are shown in the position they occupy when the zero setting 'key is depressed. Fig. 30 is a fragmentary isometric view of the multiplication and division keys and certain parts controlled thereby, the division key being shown depressed. Fig. 31 is an isometric view showing the bank of keys including the multiplication, division, addition and subtractionv keys and a disconnecting key and also showing certain parts connected with said keys. In this view the addition key is shown depressed. Fig. 32 is a right-hand side elevation of the setting-up unit for the lowest denomination. Fig. 33 is a view partly in section of one of the setting-up units, parts being omitted to show the arrangementof the stops. Fig. 34 is a front end view of one of the setting-up units. Figs. 35, 36 and 37 are diagrammatic plan views showing the parts immediately controlled by the keys. In Fig. 35 the parts are shown set for addition ormultiplication; in Fig. 36'the parts are shown in inoperative position so that the typewriter keys have no eifect on the adding mechanism, and in Fig. 37 the parts are shown in position for subtraction or division. Fig. 38 is a fragmentary rear view showing part of the carriage connections.

My invention is applicable, ormay readily be adapted,.to any sort of typewriting machine, but I have here shown it applied to a typewriter of that general class in which the printing keys and the types are mounted in a stationary framework and wherein a aper carriage is provided having a roller p aten and moving step by step across the main frame in which the printing instrumentalities are mounted. In

the present embodiment of the invention the t'ypewriting machine and the computing.

adding machine by mounting on thetypewriter a few attachments which are so constructed as to be readily added to the machine. a 1

Thesmain frame of the typewriting ma-' chine shown in the drawings comprises side plates 1, a front plate 2, a backplate 3 and a top plate 4, said ,top plate being supported by the side plates 1 and back plate 3. The

s de plates 1 support two stationary carriage rails 5 and 6, the former in front of the latter and said rails are formedwith and can be 'operatively connected with the grooved ball races which cooperate with anti-friction balls or rollers 7 to support a carriage. truck 8 for motion transversely of the machine.

11 and 12 each pivoted at its forward end to the platen frame and at its rear end to the truck, as shown in 1, so that the platen frame may be shifted up and down for upper and lower case writi The platen The truck 8 has a platen frame 10 mounted thereon by parallel linksframe 10- supports a roller p aten 13 against the front face-of which the types 14 are adapted to strike to print on the paper. It

will of course be understood that the platen the side plates 1 beneath the carriage. The

carriage is provided with a feed rack 21 mounted at its ends on arms 22, each of which is pivoted at 23 to a lug 24 depending from the carriage truck 8. The rack bar is provided with rack or gear teeth on its forward edge, which teeth mesh with the teeth of a pinion 25 mounted .on the upper end of a vertical shaft 26 which is iournaled at its upper end in the cross bar 20 of the main frame. said shaft at its lower end being journaled in a second cross b'ar.27. The rack bar 21 is normally held in engagement with the stood that the rack'bar 21 and arms 22 constitute a yoke frame which'ma-y be swung toward the back of the machine about the pivots 23 to move the rack bar 21 out of engagement with the pinion 25. p 1 1 Near its lower end the shaft"28 has mounted thereon and suitably connected therewith an escapement wheel 30 which is controlled by feed dogs 31 mounted on a dog'rocker 32 forming part. of. a frame which extends across the base of the typewrlter and which ,eomprises a transverse rock shaft 33 ivoted at its ends in the side plates 1. Said rock frame alsocomprises forwardly directed arms -34 which are connected together at their forward'ends by a universal bar 35 that lies beneath the entire series of printing key levers 36. These key levers are pivoted at their rear ends on a transverse fulcrum -rod 37 which is secured atit-s ends to depending brackets 38 forminn pa'rts of the fixed frame-work of the machine. Each of the printing key levers 36 carries at its forward enda character key 40. It will of course be understood that the typewriter has a fullset of character keys including keys for printing the letters of the alphabet and punctuation points and other characters, but

only the numeral keys are shown in the.

present instance. Each of, the key levers 36 is guided near its forward end by a comb plate 41 and each of said key levers is con-s nected to a link 42 with the forw'ardlydfi rected arm of' a bell 'crank sub-lever 43,

which in turn 'is connected .by a link 44 with a pivoted driver 45 to which is pivoted at 46 a type bar '47, which at its forward end is pivoted at 48'to a guide link 49 and .each of the type bars .47 carries at its rear tened by a screw 52 to the front face of a end a type block containing two types 14,

one of which types in the type action shownprint oneof the ten in Fig. 1 is adapted to digits or numerals. I p

The sub-levers 43 are each pivoted to individual hangers 51, each of which is fassub-lever segment 53. Each of the drivers 45 is pivoted at 54 to an individual hanger 55 which is secured by screws 56 to the rear face ofa segment 57. For the sake ofrigidity the segments 53 and 57 are connected near their middles by a bar 58. The several guide links 49 are all pivoted on a pivot wire 60 which lies in a groove formed in the concave face of a segment 61, the rear face of which segment is formed with radial slots 62 in which thelinks 49 are arranged to play. The types 14 normally restagainst an ink pad 63 mounted in a segmental trough 64 beneath the platen. The con stru'ction is such that when one of the keys 40 is depressed the corresponding driver 45 is thrown upward and toward the rear about its pivot 54 as a center and the t pe 14 on, the corresponding type bar'47 is ast lifted substantially radially off of the ad 63 until it reaches a point in front of ,t e' printing point on the front face of the platen when it is guided by a peculiar linkage, upon which it is mounte into a path directly toward the platen, striking the front faceof said platen. The path of the type is indicated ythebroken line 65in Fig. 1; It will be perceived that the-type action resembles that oft-he Yost typewriter but is adapted for a front-strike machine. It will be understood thatth e type bars 47 and the drivers 45 are arranged in an .are or segment of a circle about the println point on the front face of the platen after t e fashion of a front-striketypewriter. Whenever one of the printing keys is depressed the kev at the rear of the carriage and supported on the carriage truck by means of brackets 67.

As best shown in Figs. 17 and 18 this column stop bar is of the general form, being square in cross section-and having in two opposite faces thereof transverse slots 68' arranged a letter space distance apart for the accommodation of adjustable column stops 70. These column stops are generally made of ,sheetmetal and bifurcated to embrace the column stop bar, the arms of the column stop fitting into two opposite grooves 68 so that the column stops are adjustable" lengthwise of the bar to any desired letter space position by removing them from the bar andinserting them in any desired pair of slots 68. 'In the form of tabulators shown in the drawings, each column stop has a depending part 71 which is ada ted to cooperate wit-h any one of a series 0 denomination stops 72, each of said denomination stops in the present instance consisting of the upperend' of the" upwardly extending arm 73 of a bell crank lever having a forthe printin "mechanism extendin toward the front 0 .the machine. Thebel cranks 73,74 areeach pivoted at itsangle on the fulcrum rod :75. mounted in a U-shaped bracket 76 securedt'o the rear. plate 3 of the f main frame of the typewriter. I The arm 74,

of the bell cranks fan outward toward the front of the machine and eachof. them has pivoted to its forward'end the stem 77 of al,

. 12o, wardly extending arm=74 that lies beneath. 1

I key 78.

denomination. ke 78, -said denomination keys being .raise in'a tier. or transverse row at the back of thekey board of themachine. The bell cranks are maintained in normal. position'bv returning springs 80,

one for each bell crank, said springs, as shown in the present" instance, being connected with the arms 7a near the forward ends of the-latter and also with the late 41.

The upper ends of the arms 7 30f t iese bell.

front-of all of the lever arms 73, said uni versal bar being mounted on a lever 83 pivoted between its ends'at 84 to a bracket 85 depending from the frame bar 20. At its upper forward end the lever 83 carries a shoe 86 that lies in front of the carriage feed rack 21. The construction is such that when one of the tabulator keys 78 is depressed the corresponding denomination stop 72 is moved forward into the path of the column stop 71 and atthe same time the lever 83 is rocked about its pivot forcing the feed rack 21 toward the rear of the machineout of engagement with-the pinion 25, thus releasing the carriage from the control of its escapement wheel. The carriage is then drawn toward the left by a spring drum 16 until it is arrested by the cooperation .of the stops 71 72. It will be perceived that the adjustment of the stop 71 on the bar 66 determines the position of a column of figures on the 1 aper and. that the carriage may be brou' t to any denominational position in the. co umn thus determined by operating the appropriate denomination The typewritin'g machine partially shown in thedrawings and briefly described above, forms no part of thepresent invention except' as itenters into combination with the computing mechanism presently to be devscr ibed; and it will of .course be understoodthat any other known or suitable formof typewriting mechanism may be usedin combination w1th the computing mechanism without departing from my invention.

Many of'the features of the typewriting machine shown and described are of my invention and they form the subject-matter of certain pending applications of mine. i

The typewriting machine shown is manu' Seated in the top plate 4 pies the appear herema factured for separate use as a typewriting machine.

The main frame of the computing 'machine comprises a substantial] rectangular casin having side plates 90, a back plate 91, a rig t-hand front plate 92 and a left-hand front plate 93. A square cross bar 94 extends across the front of the rectangular part ofthe casing and is connected with the front plates 92 and 93 by screws 95. As

best shown in Fig. 1, the front plate 2 of the typewriter rests on this bar 94 and on thefront plates 92 and 93. The side plates 1 of the typewriterframe constitute in effect upward continuations of the side plates 90 of the computing machine. The back plate 91 of the casing of the computing machine is however situated a short distance to the rear of the back plate 3 of the typewriter and the intervening space is covered by a shelf 96 constituting part of the computer casing. In order to insure that the typewriter is accurately positioned on the computer, lugs 97 are secured to the cross bar 94 and lugs 98 to the shelf 96, these lugs extending upward in such position as to cause the typewriter to be accurately positioned on the computer casing.

Most of the computing mechanism is supported b a heavy base p ate 100 which occuower forward part of the computer casing bein secured to the side plates 90 and to the ront plates 92 and 93 by screws 101 (Fig. 2). The part of the machine that contains the register wheels pro'ects out in front of the typewriter and in rout of the front plates 92 and 93 as indicated in Fig. 2 and the base plate 100 extends forward beneath the register wheels having the general outline in this respect indicated by the outline of the casing as seen in Fig. 2.

The register wheels are mounted in the forwardly projecting part of the casin on a hollow shaft or sleeve 102' (Fig. 14) w ich is journaled at or near its ends in brackets 103 risin' from the base. plate 100 to which said brac ets are secured by screws 104. The hollow shaft 'or sleeve 102 has journaled therein a rock shaft 105 for a purpose, which will appear hereinafter. Endwise motion of the sleeve '102 in one direction is prevented by a collar 106 which surrounds said sleeve outside of the left-hand bracket 103 to which said collar is secured as by a set screw. Just inside of each of the'brackets 103 an arm 107 (Fig. 28) projects from the shaft "105 through a peripheral slot 108 in the sleeve 102.-in such fashion that when the shaftr105 is rocked it may move independently of thesleeve 102 until the post 107 comes to the end of the slot 108, after which the sleeve will be carried along with the shaft. The pur se of this construction will 21 andthe construction'is .right-hand side of said flange there. is

diametrically opposite each other.

-as'sists in. this regard.

' 13 inclusive, these partsbeing put together. is

bevel 117* and spring clips 1181liein the- -tightene( the inner end of the clip 5.118;

oeg stamped or otherwise formed orlyimprinted .mentimmd now, only to call attention to the fact that these posts 107, being 'ust inside of, the, brackets 103,- prevent enciwise motion both of the sleeve 102 and also of ,thevshaft .105. As was said above, the collan-106- also Each of the registering units .isbuilt up of the several parts shown in Figs, 8-.to.

in the manner indicated in F ig.- .7 an also. in Fig; 14, it being understood that in .Fi 14 the observer isllooking from the,bac toward the-front ofthe machine.- Each of-. said registering unite comprises a collar 110 mo11nted,on the sleeve 102- and rigidly sew; cured-in place on said sleeve by means of-a set'screw or set screws .111 threaded throughv holes 112 in the collar fand engaging the. sleeve. The-collar ;116 is formed ',w,ith.-- all flange- 113,- this flange being in the mature. ota disk or annulus. On theleft hand side of-the, flange 113 there is mounted, on-thecollar .110 a disk or-annulus 114 :and on the r mounted on said collar. a second. disk or annulus 115, the disk. 115 being of slightly greater diameter than the disk. 114. Inor.- dertosecure' together theltw-o disks. 114 and 115 and. 'topress them-into frictional con- -,tact with ,the flange 113 the disk 115- is. formed w-ithi two cut-outs .116, each havingits end nearestthe shaft102- formed on a cut-outs 11.6 as indicated in sFig. 14. As best shown in Fig. 13 each? of these spring clips is formed with two ears 12O-bent down from one end thereof and also with,.-a ,hole, 121. A screw 122 (Fig.-14) passes through the-hole 121 and is threaded into-a hole.123 -(Fig.-9) in the disk 114. The-ears 120-015, the spring clip enter peripheral notches124 in the disk. 114 to prevent the clip from turning about the 'screw 122 as apivot. It ,will be )erceived that if the screw-122 be.

pressing against the disk 115, will clamp the two disks together, causing -themto bear against the flange 113 with spring pressure, theamount ofwhich can be regulated by tightening or loosening the'screws .122. It will; be perceived that therearetwo of. these. spring connections between the two disks, said spring connections being substantially.

-- The register wheel proper, as shown in. Fig. 8, consists of anannulus 125 haying ratchet teeth formed n its peripheral-surthe faces-of the ratchet teeth. In vthe. present instance each. register wheel ,has forty teeth marked with four series of digits.

As will. be understood by reference.to.'Figs.. 8 and 14, the register wheel'has aninternal annular flange 126 of such internal diameter as to, fitdoosely-about the periphery of the diskl; 114.; Sa d register wheel has in ,its right-hand face a cut-out inwhich the disk 115 has .:a workingfit, said disk contacting with themight-hand face 127 of the internal flange 126.; Two sprin clips 118," are se the- -register pwheel etween. the disk 115 on the-one hand and the clips 118' on the other.

B'ythis means the annulus 125 is frictionally COI'1I1fiGted. With\'tl1Q.disks 114 and 115 andv the-amount 01:1 ifriction between these parts may be. regulated. by. adjusting, the screws 128. It vwillkbe perceived that the disks 114 and-.115 ,are constrained tomove to gether and that. therefore they constitute in effect a singlfe partof the mechanism; that said, \disks are frictionallv connected withtheflanges -113-and,-therefore, with the hol-" low-shaft 102 on which saidflanges 113 are rigidly mounted; and that the annular reg-- .ister Wheels :125 .are in turn frictionally connected with the disks 114, 115. Some other-formfof yielding connection could be subsfiiffit'd'ior the frictional connection betweenrthe- -disks114,115 and the-flange 113.

In order-to enable the-screws 122 and 128 tobe adjusted after the parts have been assembled. as shown in. Figs 14, I form in each of'the disks 114 and 115 a hole 132, which hole is somewhat elongated radially of the disks These-holes 132 in the two disks are in lregisterwith one another and when-the parts are in normal position said holes occupy the position shown in Fig. 4, theholes 132*: for the entire series of mg screw into alinenient' with the holes 132 ofthe-remaining .unilsvanda screwdriver may beinserted from the right-hand end of the series it it is (meet. the screws 122 that re quires ad ustment, or from the left-hand end of the series if it is one of the screws128 that requires adjustment. I Eachof thecollars 110 has mounted therebn-a stop piece or plate 133. which is in the form ofi'a plate of sheet metal surrounding:

the collar 110 and secured to, the 'disk 115 by screws 134 (Fig. 4) passing through holes 135 in the stop piece and threaded into holes 136 in the (llSk 115. It will be perceived that the stop piece 133 and the disks 115 and 114 constitute in effect an operative connection between the register wheel 125 and the flanged collar 110 which is secured upon the shaft 102. Each of these operative connections constitutes an individual actuator or driver which is frictionally or yieldingly connected with its individual register wheel and each of these actuators is frictionally connectedwith the shaft 102 which constitutes a common actuator or drlver'for the entire series of reg;

ister wheels. The stop piece 133 has a stop arm or nose 137 andat a certain distance from the working end of this stop nose, toward the front of the machine, a stop lug 138 is bent off from the plate 133 toward the right. As will more clearly appear hereinafter the motion of the stop pieces 133 is controlled by certain key-controlled stops which cooperate with the parts 137 and 138 to limit the forward motion of the stop pieces;-and by the forward motion of I the stop pieces I mean a motion away from normal position, as distinguished from the return motion. In the present instance, the forward motion of the upper part of each stop piece is toward the rear of the machine. After a number has been set up by the keys by operating the stops just referred to the shaft 102 is oscillated by an operating handle and connections to be hereinafter described, said shaft moving first in a forward direction, that is to say, toward the rear of the machine a distance somewhat in excess of a quarter turn, then back again. If a number has been written in the denomination corresponding to any particular register wheel the stop piece 133 will have been released and a limiting stop will have been thrown into the path either of the nose 137 I or of the lug 138. When the shaft 102 is rocked forward the individual actuator of that register wheel will be moved forward until it is arrested by the key set stop, carrying the register wheel with it. On the return stroke of the shaft 102 the stop piece 133 will be carried back to normal position but the register wheel will be held in its advanced position by a pawl 140 (Figs. 4, 25 and 27) engaging the ratchet teeth of the register wheel, which ratchet teeth and pawl are so disposed as to allow of forward rotation of said register wheel but to prevent backward rotation thereof. There is a pawl 140 for each register wheel and the entire series of pawls are pivoted on a pivot vire 141 secured to a plate 142 which in turn is secured to the base late 100 near-the extreme forward end t ereof. The forward face of the plate 142 is formed with a series of tongues 143 which alternate with the pawls140 and are bent up and around the pivot wire 141 after the fashion of a hinge.

The rear part of the plate 142 is bent tip-- ward forminga flange 144 to which are secured the rear ends of a series of light contractile springs 145 which at their forward ends are connected with the several pawls 140 and press said pawls against the register wheels. In order to provide for an up and down adjustment of the entire series of pawls the plate 142 is not secured directly to-the base plate 100 but rests on an inclined plate 146 having at its forward ed e a depending flange 147 that rests on t e base plate 100.. The plates 142 and 146 are together secured to the base plate 100 by bolts or screws 148 having nuts 149. These bolts pass through slots in the inclined plate 147 so that said inclined late may be adjusted in a front or back irection to lower .or raise the plate 142 before the bolts are tightened. This device gives a very fine adjustment of the pawls.

As best shown in Fig. 27 each of the pawls 140 is wider than is necessary for cooperation with its register wheel. and it has an upwardly extending projection 151 that lies by the side of the register wheel in position to arrest, in its normal position, a forwardly extending arm 152 of the stop piece 133.

In order to insure positively theeomplete return of each of the stop pieces 133 upon the return stroke of the shaft 102, said stop piece has bent off therefrom .a lug 153 in position tobe struck by one of the screws 111 which is elon ated for the purpose (Figs. 4 and 5). normal position shown in Fig. 4 this screw 111 is in contact with the lug 153 and the arm 152 is in contact with the'upward projection 147 of the pawl 140. If the tension on the clips 118 is tighter than that on the clips 118', the individual actuatorwill be restored to normal position by friction; but whether thisactuator is so restored. or not, its restoration is positively insured by the screw or pin 111 and the lug 153.

The key-controlled stops which cooperate with the stop piece 133 to control the forward motion of the register wheels in accordance with the digits to be added, may be understood by reference to Figs. 15, 33 and 34. There are ten of these stops for each denomination and each denominational group of stops is mounted in an individual support which is designated as a whole by the reference numeral 154. Each of these stop supports is plate-like in form and stands vertically at the rear of the corresponding register wheel, O1".l'iltll8l', each support has its central plane substantially coincident with the plane of the right-hand face of the corresponding stop piece 133. Each stop support consists of a right-hand hen the parts are in the ace to face and secured together by screws 157. Each of the stop supports-has its for ward end adjacent to the, corresponding upper part of the support is cut out as indicated in Fig. 32 at 158 in the arc ofa circle concentric with theshaft' 105." The right-hand plate'155 has five grooves 159 out in its left-hand face lengthwise of the plate and extending toward the rear at a downward inclinationas shown in Fig. 33. As shown in Fig. 34 these grooves are of such formv that when the plate 155 is in posltion against the-plate 156 said grooves form square holes 'ezgtending vlengthwise through the stop support. The plate 156 is formed with four grooves 160 similar to and parallel with-the grooves 159 and alternat- IIIgWVitll said grooves 159. These grooves 160 are closed by the plate 155 forming another set, of holes through the stop support, the two sets of'holes being arranged in staggered relation as will be clearly understood 1 56 thus serves as a coverplate for the grooves in the other of the two plates. The digit stops 161, 162, 163, 1 4, 165,166,167, 168 and 169 consist of pieces of s. uare-wire lying in the holes 159' and 160 an normally. having their forward ends substantially flush with the," curved surface 158 and their rear ends projecting from thefrear end of the stop support as indicated. in Fig. 33. Aswill be understoodby reference to-Figs; 2, 15 and 33, the rear 'e'ndof each of these stop w res is bent atri htanglesv forming a fingers rojecting.

. a finger 17O', each-of sai a short distance. be 0nd the rightand face of the plate 155. .ny on'e of the stop wires may be. pushed toward the front of the machine, throwing its forward end into the path of the nose 137 of the stop piece 133, or

'lug 138. Those wires-that are mounted in the plate 156 stand when projected in the path of the nose 137 and those mounted in the plate 155 stand in the path of the lug 138. The-wires are retained either in their operative or inoperative positions by .fricbeing inserted in the plate is slightly sprung so as to be normally slightlycurv'ed-instea of perfectly straight; hen the wires are inserted in the straight slots 159 and 160 are thus placed under frictional restraint in the slots,

Above the .slots 160 the plate 156 has. a fifth slot 171 in which lies a retaining stop wire 172 which, as indicated'for example in Fig. 4. is normally in it's'projected' position in'which positionit coiiperates with the nose 137 to retain the correspondin' stop piece 188. in its normal position. e slot 171 is not formed with the downward inregister wheel and at said forwardend the from Fig. 34. Each of the plates 155. and" tion and to this end each of the wires before they have 'to be sprung straight and they clination of the remaining slots but is substantially horizontal. The plate 155 has in its uppepedge a notch or cut-out 173 and the reaiipend of the stop 172 is bent to the right forming a finger 174 which projects f through the cut-out 173 andit is by means of this finger 174 that the stop 172 is controlled. As will presently appear, means are'provided wherebl whenever one of the stops 161169 is pro ected to operative po sition the stop 17 2 is withdrawn, thus leavmg the corresponding stop piece 133 free to move forward whenthe shaft 102 is o .erated. The slots 160-arespaced from t e slot171 and from one another to correspond 30' with the spacing of the ratchetteeth on -the register wheel. The stops 161-169 correspond respectively to thedigits- 1 to 9.

The stops 161,- 162, 163 and 164 are mounted in the slots'160 of the plate 156and they gs:

cooperate with the nose --1 37 to arrest the stop piece 133 a'fterone, two, three or four units of forward motion of said stop piece."

The. stop 165 corresponding to the-digit 5* occupies the uppermost one "of the M8159 to s and this stop, is situated one-half unit distanee. below the o stop 172. The lug .138 is situated on't he stop piece133 a distance back of the-nose '13! equal 'to-, four and one-half ratchet teeth of'the'regiSterwhe1 9g 1 125. It will thus be seen that the stop a v 165-. be pro'ee'ted to operatiye position an e thestop 1 2 bc withdrawn, the stop. piece 133 will be. free. to move -five' units before it is'arrested'by the lug-138' contacting with 160 the stop 165,' The-remaining stops 166, 167

168' and-169 are spaced a units distance apart beneath the stop 165 so that these stops areadapte'd to allow to the stop piece 133 motions of six, seven, eight and nine units respectively. By thus providing two stop portionson the stop piece 133 and arranging the 'key'-controlled stops in the staggered fashion shown, it will be seen that I am enabled to group all of said key controlled stops in a. much smaller fraction of the circumference of the ratchet wheel than would otherwise be possible.

An individual universal bar 175 Figs. 4

and 5) is provided for each setof key-con- .trolled stops.

This universal bar consists of a plate of sheet metal mountedon the 'side ofthe plate by means of a headed and shouldered screw 176 which passes through an elongated slot 177 in the plate 120 175 and is threaded into the plate 155, the

construction being such that the plate l75 is ,free' to sli delfor a limited distance: in a front or back direction. Said plate 175 normally occupies its rear position as shown in 12 Fig. 4'with its rear edge in contact, or substantially so, with each of the fingers bent ofl from'the several stop wires; When any of thestops 161-169 'is thrustforward A to operative position the finger 170 thereof Said lever has a forwardly extending arm 182 with a depending tooth or foot 183 and said lever also has a rea'rwardly extending arm 184 having a depending foot 185. The construct-ion is such that when the parts are in their normal positions shown in Fig. 4

the foot 185 projects below the lower edge of the stop support 154; and when the universal bar is in its operatedposition the foot. 183

projects'below said stop support as shown m Fig 5. It will be seen that when the universal bar is moved one way or the other the three-armed lever is rocked about its pivot and, vice versa, if said three-armed lever be rocked about its pivot it will move the universal bar. This lever also supports the forward end of the universal bar..

Above the forward end of the universal bar a straight lever 186 is pivoted on a screw 187 which is threaded into the plate 155 and the lower rounded end of this lever rests in a notch 188 formed in the upper forward corner of the universal bar 175. The notch 178 has both front and rear wallsbut the notch 188 has only a rear wall, the lower arm of the lever 186 being free to move toward the front of the machine independently of the universal bar and the universal bar being free to move toward the rear of the machine independently of the lever. The finger 174 of the retaining or 0' stop 172 passes through a hole in the upper end of the lever 186. The construction is such that when one of the digit stops is operated and the universal bar is moved toward the front to the position shown in Fig. 5, the lever 186 withdraws the stop'172 as indicated in said Fig.

5. It will be perceived that if the universal bar be forced from the position shown in Fig. 5 toward the rear to the position shown inLFig. 4 by rocking the lever arm 180, said universal bar will restore to normal posltion whatever digit stops may have been operated inth'at particular group. The universal bar is thus .restored by the operating mechanism :to behereinafter described, but as will be seenfromlan inspection of Fig. 5, this restoration of the universal bar may take place at, atime. when the curved rear edge of the stop piece 133 is below its normal position I in which case said stop piece would stand in the path of the retaining stop 17 2 and prevent said retaining stop from being restored tonormal position until the stop piece 133 shall have been completely restored to its normal position shown in Fig. 4. For this .reason the lever 186- is not positively. connected with the universal bar 175 on the from its 9 to its 0 group or gang of key-controlled stops for return stroke of said universal bar, but is connected with one end of a light contractile spring .190 which isconnected at its other end to the universal bar 175. In order to accommodate this spring a shallow groove 191 IS milled in the-face of the plate 155.

" its motion independently of the lever 186,

stretching the spring 190,- said rear edge of the stop piece 133 being made on the arc of a circle for this purpose. As soon as the stop piece 133 reaches its normal position,

shown in Fig. 4,- the stop 172 snaps forward undr the impulseof the spring 190. From what has been said it will be seen that itis not desirable that the stop wire 17 2 be placed under any frictional restraint but it is preferable that it slide freely in its groove. This I stop wire therefore is not bent and sprung into its groove like the others but is made straightand fits-loosely in the groove 171. The transfer mechanism comprises means whereby when any register wheel passes position, the entire the next register wheel of higher denomination is caused to drop down a distance equal to one increment of motion of a register wheel. It will be perceived that whether or not a digit is being added at the time on the re ister wheel of higher denomination, this will effect 'the transfer correctly. If no number'is being added on the higher register wheel its stop piece 133 will have its nose 137 resting on the retaining stop 17 2 and if this stop drops down a units distance, 1 will be added on the wheel. If, on the other hand, some number is bein added at the time on the register wheel of igher d0.- nomination then the operative one of the stops 161-169 will be dropped a units dis-' tance below its normal position and the stop piece 133 will be allowed one more increment of motion than that indicated by the stop. To this end the stop supports 154 are not rigidly mounted but are pivoted near their rear ends on a frame rod 192 which is supported at its ends in brackets or standards 193 and 194 rising from the base plate 100, to which they are secured in any suitable manner as by screws. The rod 192 is prevented from slipping out of the brackets endwise by collars 195 mounted on the ends of the rod and secured in place by set screws.

In order to space the stop sup orts apart on the rod' 1921 have provided pins or lugs l96 one projecting from the right-hand face of each of the stop su ports and adapted to contact at its end wit the next succeedin stop support. The rod 192 passes throng said comb plate.

, ends of thestop carriers 154 I provide in spring, 212 fastened at one end to the lever holes 199 (Fig. 32) in the upper rear parts of the stop carriers, said rod b'eing situated as'nearlyas may be so that a line through the center of the rod and through the center of the shaft 105 would pass about midway between the stops 172 and 169. In order to guidev the lower rear ends of the stop carriers a plate 197 (Fig. 4) is secured to the base plate 100 by screws 198 and said plate 197 is bent up to form a flange which is slotted to form a comb plate, each of the plates 154 lying in one of the slots or notches of As the thickness of the stop carriers-154 is greater than the space between them, I prefer to form a notch 200 in each of the plates 156 as indicated in dotted lines in Fig. 5 and in full lines in Fig. 28 so that it is only the. corner of the plate 155 that lies in the notch inrthe comb plate 197. In order to guide the forward front of said forward ends an angled, plate or strip 201, oneflange of which is secured to the base plate 100 by means of screws 202.

The plate 201 has at its upper part a-second flange directed rearward and slotted to form a comb plate to guide the forward ends of the stop carriers as will be understood by reference to Figs. '4 and 5. For cooperation with this comb plate there is formed at the lower forward corner of the plate155 a projection 203. I prefer not to extend the plate- 156 forward to correspond to this projection in order to give wider fingers to the comb plates 201. It will be perceived that each of the stop carriers '154 is pivoted to swing .about the rod 192 as a center, the forward end of the stop carrier having a motion up and down.

The forward end of the stop carrier is normally maintained in its upper 'POSltlOIl shown in Fig.4 by a trip lever 204 pivoted at' its forward end' on a pivot screw 205 threaded into the forward projection 203 of the plate 155. The lever 204 is formed a short distance back of thepivot 205 with a heel 206 which rests on the base plate 100.

"The lever is extended from said heelsome distance toward the back of the machine where it is formedwith an upstanding arcshaped arm 207 having a" notch 208 in its forward edge. The notch 208 is normally engaged bythe lower rear end of a trip lever 210 which is pivoted between its ends on a pivot screw 211 threaded into the plate 155 the lever being moved into engagement with the notch 208 by means of a light and at its other end resting on a pin 213 proecting from the stop carrier. The upper forward arimof the lever 210 terminates near the upper corner of the stop carrier and atits end said lever is formed with an inclined or cam face 214 which stands in the path of transfer lu'gs 215 projecting from notch 208. When the lever zlqmoves out of said notch there is no longer anysup ort for the free end of the stop carrier on which the lever is mounted and said stop carrier accordingly drops to the position shown in- Fig. 5 where it is arrested by the straight lower edge 216 of the lever 204. In this position of the parts the lower end of the lever 210 is received in the angle'between the horizontal arm of the'lever 204 and the upstanding'arm 207 of said lever which prevents further motion of the lever 204 with relation to the stop carrier 154. In Fig. 5 of the drawings the key-controlled stop 164 is shown ll'l'thfi act of arresting the nose 137 to add four on the register wheel, but this register wheel 1s receiving an additional increment of motion, due to the transfer from the next wheel 'of lower order, so that the number actually added is five.

The above description of the transfer mechanismappliesto all of the stop carriers except that of lowest denomination. The right-hand face of the stop carrier of lowest denomination is shown in Fig. 32

where it will be seen that this stop carrier is provided with a short lever 217 pivoted on a screw 205 and having the engaging heel 206 the same as the levers 204. The lever 217, however, does not have the u ward extension 207 nor is it controlled y a trip lever 210 butit has a'rearwardly extendingarm 218 for cooperation with other. parts of the machine ,to be hereinafter described. The function of the lever 217 has to do with the operations of subtraction and division as will appear hereinafter.

The operating mechanism includes an operating crank handle220 pro ectmg from a crank arm 221 at the left-hand side of the computing machine and normallystanding in the position shown in Figs. 2 and 25. The crank arm-22] is rigidly mounted on the outer-end ofa shaft 222 which passes through the casing plate 90 andlwh ch at its inner end has rigidly mounted thereon a gear segment 223 which meshes with a car segment rigidl mounted on the en of the shaft 105 Wl1i0 passes throu h the axis of the register. As here shown t e gear 224 is secured onthe end of the shaft 105 by means of a pin- 225 passing through, the hub of thesegment and through the shaft;

The shaft 222 is journaled in two brackets 226 and 227, each mounted on the base late 100 to'which it is secured by screws. ndwise motion of the shaft 222 in its bearings in one direction is prevented by a collar 228 mounted thereon just inside the left-hand bracket 226 and secured to the shaft by a cally with the shaft 222 and secured to the outer face of the casing 90 by screws 231 and 232. The peripheryof this sector is formed with square teeth with which the points or teeth 233 and 234, of "a double pawl 235 are adapted to engage. The pawl 235 is pivoted to the inner side of the crank arm 221 on a pivot screw 236 and said pawl is provided with an arm 237' between the two teeth 233 and 234. As shown in Fig. 2 the teeth 234 and 233 of the pawl are broad enough to engage the segment 230, whereas the arm 237 is thinner and lies between the segment 230,and the crank arm 221. The arm 237 when',the crank handle is ulled toward the front of the machine is a apted to strike against a stop pin 238 {which in the present construction 1s shown as consisting of the elongated head of a screw, threaded into the segment 230. In the forward motion of the lever arm from the po sition shown in Fig. 25, the tooth 233 snaps over the teeth of the segment until the arm 237. encounters the pin 238 when said pin reverses the pawl, forcing the tooth 234 into engagement with the segment and arresting the forward motion of the crank arm. When the crank arm is pushed toward the rear the tooth 234 snaps over the teeth of the segment until the arm 237 encounters.

the head of the screw232, which screw head is elongated toconstitute a stop which both reverses the full stroke pawl and limits the backward motion of the handle. The point of the arm 237 coiiperates with a spring 239 which is secured to the crank arm 221 by a screw 240. The spring 239 is bent as shown in Fig. 25 so as to provide saidspring with an inclined part 241 with whic the arm 237 contacts when the pawl is in one position and with another inclined part 242 with. which said arm contacts when the pawl is in the other osition.

\Nhile t e full stroke pawl is adapted to arrest the operating handle, nevertheless, I refer to provide an additional stop for the orward stroke of the handle and to make said additional stop adjustable in order 'to avoid 'strainin the parts. To this end, as shown inigs. 2 and 24, I provide a bracket 243 .Whi';h is secured to the base plate 100 and extends therefrom at an upward and forward inclination in' such position that the rear edge of the gear segment 223 strikes and is arrested by the un der side of said bracket. The bracket is se' cured to the base plate by screws 244 passing through an elongated slot in the bracket and threaded into the base plate, whereby the bracket is made adjustable in a front and back direction.

As has been explained hereinbefore the shaft 105 is loosely journaled in the hollowshaft 102 and said shaft 105 has two posts 107 projecting therefrom through slots 108 in the shaft 102, all as shown in Fig. 28, the construction being such as to permit a limited amount of lost motion between the shafts 105 and 102. The posts 107 are normally maintained in the lower ends of the slots 108 as shown in Fig. 28 by means of a coiledspring 245 (Figs. 2,and 25) coiled about the outer end of the shaft 105 and at one end hooked around the gear segment 224 and at the other end secured to the-collar 106 which,'as has been explained, is rigidly mounted on vthe hollow shaft 102, the constructicn being such that the spring 24:) tends to turn the shaft 105 with relation to the shaft 102 toward the rear of the machine; .that is to say, in the direct-ion which has been described as a forward direction.

\Vhen a number has been set up on the machineby operatin the key controlled stops 161-169 the hand e'220 is drawn forward" until it is arrested by the stop 243 and it is then ushed backward until it is arrested by the pm 232 and said handle is then released. The forward stroke of the handle imparts the forward stroke to the shaft 105 which, as-will be understood by an inspection of Fig. 28, carries the shaft 102 with it from the beginning of thestroke. When the handle 220 is started toward the rear of the machine the shaft 105 begins at once to turn toward the front of the machine, but the shaft 102 does not beging its return motion until the post 107 reaches the up r end of the slot 108, after which the two 3 afts move together until the handle 220 completes its.

return stroke which, as will be understood,

is in a position below that shown in-Fig. 

